Kengo Mizumachi

The third tallest player on the team and a natural athlete. Was on the swimming team but quit due to the lack of challenge. Plays on the line and uses his height and speed from a "swimmer's start" to great advantage. He has a bad habit of saying inappropriate and insensitive remarks. He is also known to strip down to his boxers in front of people, and seems to hate football equipment, saying that, "It's too heavy, I can't move properly." Apparently, modesty is not an issue. Initially, he looks down (no pun intended) on Komusubi of the Deimon team due to how short he is, but learns there is a lot of strength in Komusubi's small frame and was defeated by him at the end of the game.

Also, Mizumachi seems to understand Powerful-go, the "true language of truly strong men," as he responded positively to Komusubi's post-game grunt of "HOT!". He also likes swimming and spying on the females' half of the bathhouse when the Kyoshin team relaxes, stating that, "The only thing to do when you go to a public bathhouse is to swim or peek, right?"